INTRODUCTION. 



In the present nienioir, the determination and description of thj 

 Leafhoppers collected hy Prof. Koebele and Dr. Perkins, and 

 partially discussed in the ninth part of P>ulletin I. are now com- 

 pleted, — together with those found by Mr. Muir- in the Fiji Isles, 

 as well as two interesting" forms from China. 



In the former contribution, 85 genera and 212 species were 

 erected as new, wliile 58 genera (and subgenera), and 175 species 

 (and varieties) are now added, a total of 143 genera and 387 

 species, making a considerable increase in our knowledge of Aits- 

 tralo-Fijian Leafhoppers, as almost all of the new forms are from 

 these countries. At the same time, it must b^ insisted that these 

 form but a small proportion of the total Leafhoy^per Fauna of 

 the Countries mentioned. 



The Australasian (*) Region seems to embrace four sub- 

 regions : 



1. The AiJSTROMALAYAN (or Papuan), including that of the 

 same name of Wallace, but extending to include the tropical 

 forest of Queensland, New Caledonia and adjacent islands as far 

 a'^ the Fijian Archipelago. 



2. The EuRONOTiAN (or Bassian), including the South-eastern 

 third of Australia and Tasmania. 



3. The Maorian, including New Zealand and adjacent isl- 

 ands. 



4. The Westraliax, or West Australia. 



Nothing is known of the indigenous Hemiptera of Tahiti, Sa- 

 moa, the Tuamotus, &c., but they are probably a mixture of 

 various faunas. The Hawaiian Archipelago forms an unattach- 

 ed subregion of great antiquity. From the little that is known of 

 them, the Carolines and Marshalls and perhaps the Mariannes, 

 belong to the Austromalayan. 



* I piolVi- this name of Huxley's to the usual "Australian" of autliors. U is voiv 

 confusing to term the whole Region 'Australian.' as one can then not understand 

 readily whether the mainland, or the region as a whole, is intended. 



